schmidt



E. H. SCHMIDT.

BRAKE HANDLE.

APPLICATION FILED AUGJD. l9|5.

Patented May 27, 1919.

E. H. SCHMIDT.

BRAKE HANDLE. APPLICATIONv man AUG. 1o. |915,

Patented May 27, 1919.

2 SHEETS-SHEET?.

mz nosms PETERS co.. Puvmuma,. w4sumcmu. n c.

UNITED STATES PATENT OFFICE.

ERNEST H. SCHMIDT, OF CLEVELAND, OHIO, ASSIG-NOR TO THE NATIONAL MALLEABLE CASTINGS COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

BRAKE-HANDLE.

Specification of Letters Patent.

Application filed August 10, 1915. Serial No. 44,764.

To all whom it may concern:

Be it known that I, ERNEST H. SCHMIDT, a citizen of the United States, residing at Cleveland, Cuyahoga county, Ohio, have invented new and useful Improvements in Brake-Handles, of which the following is a specification, reference being had to the accompanying drawings, in which:

Figure 1 is a plan, partly in section, showing my improved brake handle applied to a brake shaft; Fig. 2 is an elevation thereof, partly in section; Fig. 3 is a horizontal section on lines III-III of Fig. 2; Fig. 4 is a plan, partly in section, sho-wing a modified form of my device, and Fig. 5 is an eleva` tion thereof, partly in section..

My invention relates to brake handles, and consists particularly in providing a handle or lever for operating a hand brake shaft, so arranged that it may be dropped into a vertical non-operative position when not inuse. Y

Referring to the drawings, 2 indicates a ratchet wheel having a collar o-r hub 3, rigidly mounted with respect to the brake shaft 4, and on the upper end of the shaft. The lever 5 is operatively connected with the ratchet wheel 2 by means of a bushing consisting of two parts, to wit, a strap 6, having laterally-extending legs 7, and la block 8, adapted to be inserted between the legs 7 and torbear against the collar 3. The strap 6 fits loosely about the collar 3 and beneath the outwardly-extending iiange or shoulder 9, in which the collar 3 terminates at its upper end, and, with the block 8, is intended to be rotated thereabout. The block 8 is secured between the legs 7 by a rivet or pin 10 after the ratchet wheel has been put in position, and the lever 5 is secured to the device by a pin or bolt 11, which extends horizontally through the legs 7 and the block S. At the end opposite its handleV and lower interior walls of the socket 14 are,

grooves 17 and upon the pawl are corresponding lugs 18 which fit in the grooves 17 and operate therein, and which serve to keep the pawl 15`from twisting.

After the spring 16 and pawl 15 have been 5 and with it the pawl 15 and the strap 6 are free to rotate or oscillate in a horizontal plane about the collar 3 of the ratchet wheel 2. The lever and pawl may also rotate in a vertical plane about the pin or pivot 11 of the legs 7 of the strap 6. Then the handleend 12 of the lever 5 moves do-wn to nonoperating position, as is shown in dotted lines in Fig. 2, the pawl 15 is thereby raised vertically out of engagement with the ratchet wheel 2. The ratchet teeth have their outer edges beveled, as is shown in Fig. 2, and the forward end of the pawl 15 is correspondingly shaped, or recessed.

T o operate the brake the brakeman raises the lever to the horizontal operating position shown in full lines in Fig. 2, in which the beveled teeth 20 of the ratchet wheel cooperate with the recessed face of the pawl 15. The spring 16 is preferably of a strength suiiicient only to maintain the pawl Patented May 277, 1919.

15 in Contact with the ratchet teeth 20, so

pawl has passed the middle point of thev ratchet teeth, when the pawl will be allowed to move forwardly again, with its recessed face itting closely against the beveled faces of the ratchet teeth.

The handle-end 12 of the lever 5 is held. from movement above a horizontal plane bv the legs 7 lof the strap 6, against which the under surface of the lever will bear and will thus prevent further upward movement. The pivotal point 11 between the lever 5 and the strap 6 is somewhat above the level of the pawl and ratchet, which permits the pawl 15 to moveupwardly vout'of engagement with the ratchet 'very readily, because the arc of its motion is vslightlyA away fro-m the ratchet wheel, andhence does not necessitate driving the pawl V15 inwardly againstl the spring 16 to as great an extent as would be necessary if the lever 5 were pivoted at a lower point. Y y y Y In Figs. 4 and 5 I have shown a modified form of my device, in which the lever 5 is secured to a bushing 6, Which has a lateral extension 7 and to Vwhich the lever is pivf oted. As in the form shovvn in Figs. l, 2 and 3, the spring 16 may be arranged ,to have only sufficient strength to keep the pawl pressed against the ratchet, but not suiiicient to maintain the lever in horizontal position when not in use.

The terms and expressions which I have employed are used as terms of description and not of limitation, and I have no intention, in the use of such terms and expressions, of excluding any mechanical equiva lents for the features shown and described, but recognize that various modifications may be made Within the scope of the invention claimed.

IVhat I claim is:

l. In brake mechanism, a brake shaft, a ratchet Wheel positioned tl'i'ereon, a bushing movable relatively to the ratchet Wheel and the brake shaft, ind a lever pivoited to said bushing and carrying a pand, the pawl yand the pivot to the lever 'being on opposite sides of the ratchet ivheel, said paWl being adaptg ed to be brought into Vengagem'ent with the ratchet to actuate the brake shaft and being normally maintained in a vertical position out of engagement lwith the 1atchet, and ben ing bodily movable vertically avvay from the ratchet byfth'e handle when the handle is moved to nonoperative position, said ypavvl when :in engagement 'with the ratchet Wheel being reciprocated in a horizontal plane upon the backward movement of the handle.

Y 2. In brake mechanism, a brake shaft, a ratchet Wheel positioned thereon, a collar on the ratchet `Wheel, ak bushing mounted on the collar movable relatively thereto, a lever pivoted to said bns'hing and carrying a payvl, the payvl and thefpiv'o't'to the lever being on Opposite sides of tliei'atcliet ifvheel, a fiange on the collar adapted to hold the Abushing in position therein, the pawl mounted in the handle capable of movement in a horizontal plane when the handle is in ope ative position and being movable with the handle tonoin-opera tive position vertically to a position out of engagement with 'said ratchet, said paivl when in engagement with the ratchet Wheel beingV reciprocated in a horizontal plane upon the backward movement of the handle.

3. In brake mechanism, a brake shaft and ratchet wheel positioned thereon, bushing movable relatively to the ratchet Wheel and the brake shaft and a lever pivoted to said bushing capable of movement in a vertical plane into and out of operative position, said lever y containing a paivl chamber, a paWl mounted therein adapted to be moved into and out of operative engagement with the ratchet on the rotary movement of the lever about itspivot and a spring by which relaf tive horizontal movement between the pai'vl and ratchet is permitted, the pavvl and the pivot to the lever being on opposite sides of the ratchet Wheel, said paWl when in engagement with the ratchet Wheel being reciprocated in a horizontal plane upon the backward movement of the handle.

4. In brake mechanism, a brake shaft, a

ratchet Wheel positioned thereon, a bushing movable relatively to the ratchet Wheel and the brake shaft and a lever pivoted to said bushing capable of `n'iovem'e'nt in a vertical plane into and out of operative position, said lever having a loop shaped opening taking about said ratchet and bushing, `a paivl on said lever adapted to be Vmoyed into and out of operative engagement ivith the ratchet 'on the rotary movement of the lever about its pivotf 'and a spring by which a reciprocating movement between pa'wl and ratchet in a horizontal plane isNp'erinitted. 5. In brake iii'efchanism, a brake shaft, :a ratchet yp'ositini'ed th'ereoi'i', a bushing, mov# able relatively to :said ratchet 'yvheel 'and the brake shaft and a lever 'pivoted to said biislr ing and carrying a pavvl, the pa'wvl and the pivot to the lever being on 'opposite sides 'of the ratchet Wheel, said pavl being movable in one plane While in operative "engagement ivith said ratchet and movable bodily in a plane at sabstantialiy right angles to said first named 'plane' to disengage said handle from said ratchet, said Apai'vl when in engagement with the raftch'et Wheel being reciprocated in a horizont-ilA plane upon the back'i'va'rd movement of the handle.

6. In brake mechan'isi'i'i, a brake shaft, 'a ratchet Wheel positioned thereon, a hub :on the ratchet Wheel, bushing mounted on said hub and movable relatively to the ratchet VWheel ai'id the 'brake shaft, lsaid bush'- in consisting ofa strap havi laterally eX- tending legs and a block positio'i'ied betivee'n said legs, a lever 4secured by a pivot pin to the laterally extending legs Iof the bushing and carrying a Vpa'vvl, 'the paivl and pivot to the lever being on lopposite sides of the ratchet Wheehsaid 'pa'ivl being adapted to be brought into engagement with the-'ratchet to actuate 4the 'brake shaft and being normally maintaii'ied in a vertical position out of engagement with the ratchet and being 'bodily movable vertically away from 'the ratchet by the lever when th'e lever y"r'noifed to nonoperative position, sai'd payvl when in :engagement 'with the ratchet Wheel being re ciprocated in a horizontal plane nipon the reverse movement of the lever.

ERNEST H. SCHMIDT.

Gopes o1' this patent may be obtained Yfor `lire VYevents each, by addressing the ""Commissione' of Patents, Washington, DJG. 

